11450.05. (a) This article applies in an adjudicative proceeding
required to be conducted under Chapter 5 (commencing with Section
11500).
(B) An agency may use the subpoena procedure provided in this
article in an adjudicative proceeding not required to be conducted
under Chapter 5 (commencing with Section 11500), in which case all
the provisions of this article apply including, but not limited to,
issuance of a subpoena at the request of a party or by the attorney
of record for a party under Section 11450.20.

11450.10. (a) Subpoenas and subpoenas duces tecum may be issued for
attendance at a hearing and for production of documents at any
reasonable time and place or at a hearing. (B) The custodian of documents that are the subject of a subpoena
duces tecum may satisfy the subpoena by delivery of the documents or
a copy of the documents, or by making the documents available for
inspection or copying, together with an affidavit in compliance with
Section 1561 of the Evidence Code.